Removing more air from a space than is brought into that space is an example of
A) ventilation.
B) positive air pressure.
C) negative air pressure.
D) make up air.

Question

Quizplus · Accepted Answer

Removing more air from a space than is brought into that space creates a negative air pressure. This can occur naturally from air leaks or ventilation systems that are not properly balanced, or intentionally through the use of exhaust fans. Negative air pressure can cause problems such as backdrafts, allowing outdoor pollutants to enter the space, and increased energy costs.

Removing More Air from a Space Than Is Brought into That